TPS51513_16 Datasheet, PDF (1/39 Pages) Texas Instruments – SINGLE PHASE, D-CAP SYNCHRONOUS BUCK CONTROLLER

TPS51513
www.ti.com
SLUS956A – JUNE 2009 – REVISED FEBRUARY 2010
SINGLE PHASE, D-CAP+™ SYNCHRONOUS BUCK CONTROLLER
WITH INTEGRATED DRIVERS FOR GENERAL IC V_CORE™ APPLICATIONS
Check for Samples: TPS51513
FEATURES
1
•23 Minimum External Parts Count
• Includes Accurate Output Current Monitor with
Programmable Clamp Voltage
• 3-Bit DAC Selects 1 of 8 Output Voltages
• Custom VID Definition Available
• Supports VID-on-the-Fly Voltage Changes
• ±8-mV V_CORE Accuracy Over Line/Load/Temp.
• Optimized Efficiency at Light and Heavy Loads
• Patented Output Overshoot Reduction (
OSR™) Reduces Output Capacitance
• Accurate, Adjustable Voltage Positioning
Including No-Droop Option
• Selectable 250/300/350/500 kHz Frequency
• Accurate, 8-level Selectable Current Limit
• 3-V to 28-V Conversion Voltage Range
• Fast FET Driver w/Integrated Boost Diode
• 5 mm × 5 mm, 32-Pin QFN PowerPAD™
Package
APPLICATIONS
• General IC V_CORE Applications
DESCRIPTION
The TPS51513 is a single-phase synchronous buck
controller with integrated gate drivers. Advanced
control features such as the D-CAP+™ architecture
and OSR™ overshoot reduction provide fast transient
response, low output capacitance and high efficiency.
The TPS51513 supports a wide range of IC V_CORE
applications with an integrated 3-bit DAC. It also
provides a full complement of signal I/O including a
sleep mode control (SLP), two power good signals
(PGOOD and PG), and an analog current monitor
(IMON). Logic inputs are compatible with either 1-V
or 3.3-V logic levels. V_CORE slew rates are controlled
with one resistor. In addition, the TPS51513 includes
high-current FET gate drivers with an integrated P/N
junction diode to drive N-channel FETs with low
switching loss. The TPS51513 is available in the
5 mm × 5 mm, 32-pin QFN package and operates
between –10°C and 100°C.
ORDERING INFORMATION
T_A
–10°C to 100°C
PLASTIC QFN (RHB)
TPS51513RHB (32-pin)
VREF
C2
R2
C3
C5
V5FILT
EN
C1
VREF
R3
PG PGOOD
32 31 30 29 28 27 26 25
CSN
CSNS
GNDFB
VCCFB
IMON
GNDFB
1 GND
PG 24
2 CSP
PGOOD 23
3 CSN
PGND 22
4 GSNS
5 VSNS
TP51513RHB
V5IN 21
DRVL 20
6 REF
R6
7 IMON2
LL 19
VBST 18
8 IMON
DRVH 17
C7 _R7
9 10 11 12 13 14 15 16
Q1
C6
5V
C8
R1
CSP
RT1
R4
C4
R5
L1
CSN
Q2
VBAT
CIN1
+
COUT1
VOUT
VCCFB
GNDFB
UDG-09085
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
OSR, PowerPAD, D-CAP+ are trademarks of Texas Instruments.
2
Mathcad is a registered trademark of Parametric Technology Corporation .
3
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2009–2010, Texas Instruments Incorporated